So I think I will need to rebuilt the libraries.I have tested the exact same properties file and the version with older version generated the log file the newer not.The difference is also with 1.3.3 I have only used thecore libraries and with 1.3.6 I have used the complete libraries but omitted some libaries (netssl and crypto and the mysql package)

But this was not the problem.During adding the Configuration Database, I had decided to remove some unused code.And there was a code part which wasn't unused, but was needed to read the properties file.

In the Application class in the intialize fuction I had removed the loadConfiguration call from the base Application class and therefore the properties weren't read anymore.